Air-Conditioning

Air-conditioning is a process that simultaneously conditions air; distributes it combined with the outdoorair to the conditioned space; and at the same time controls and maintains the required space’s temperature,humidity, air movement, air cleanliness, sound level, and pressure differential within predetermined limits for the health and comfort of...
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Air-Conditioning Systems

An air-conditioning or HVAC&R system consists of components and equipment arranged in sequentialorder to heat or cool, humidify or dehumidify, clean and purify, attenuate objectionable equipment noise,transport the conditioned outdoor air and recirculate air to the conditioned space, and control and maintainan indoor or enclosed environment at optimum...
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Motivating examples and major applications

A dynamical system is a mathematical model of a system evolving in time. Most models in mathematical physics are dynamical systems. If the system has only a finite number of `state variables’, then its dynamics can be encoded in an ordinary differential equation (ODE), which expresses the time...
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Effect of Impurties on Steel

The following are the effects of impurities like silicon, sulphur, manganese and phosphorus on steel. 1. Silicon: The amount of silicon in the finished steel usually ranges from 0.05 to 0.30%. Silicon is added in low carbon steels to prevent them from becoming porous. It removes the gases...
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Mechanical Engineering (Definition)

Mechanical engineering is a discipline of engineering that applies the principles of physics and materials science for analysis, design, manufacturing, and maintenance of mechanical systems. It is the branch of engineering that involves the production and usage of heat and mechanical power for the design, production, and operation...
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Theory of Machines (Introduction)

Definition: The subject Theory of Machines may be defined as that branch of Engineering-Science which deals with the study of relative motion between the various parts of a machine and forces which act on them. the knowledge of this subject is very essential for an engineer in designing...
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Newtons First Law of Motion

Definition:It states ” Every body continues in its state of rest or of uniform motion in a straight line, unless acted upon by some external force.” This is also known as law of Inertia.
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Law of Inertia

Definition:It states ” Every body continues in its state of rest or of uniform motion in a straight line, unless acted upon by some external force.” This is also known as law of Inertia. The Inertia is that property of a matter, by virtue of which a body...
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